Mortarless retaining wall block



FIG. 1 is a front perspective view showing my new design for a mortarless retaining wall block;

FIG. 2 is a top plan view;

FIG. 3 is a front elevational view;

FIG. 4 is a left side elevational view which is a mirror image of the right side elevational view;

FIG. 5 is a rear elevational view; and,

FIG. 6 is a bottom plan view.

The broken line showing of environment is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a mortarless retaining wall block, as shown and described. 